TW201326432A - Coating and method for manufacturing the coating - Google Patents

Abstract

A coating is provided which includes a transparent substrate primer paint layer and a metal layer and face paint layer forming on the transparent substrate in that order. The primer paint layer is acrylic acid, which mixed qualification percent 35% to 40% white color liquid or qualification percent 2% to 4% black color liquid. The metal layer forming by process NCVM, the face paint is printing ink. A method for making the coating is also provided.

Description

Coating member and coating member manufacturing method

The invention relates to a method for manufacturing a coating material and a coating material, in particular to a coating material with good shading effect and good appearance and a manufacturing method thereof.

The main features of NCVM combine the characteristics of traditional vacuum coating technology, using new coating technology, new materials, making metal appearance effects different from ordinary vacuum plating, and beautifying the surface of the workpiece. The NCVM handles the surface treatment of buttons, light guides, etc., requiring the font portion and the light guide surface to be unobstructed, allowing light to pass smoothly, maintaining a high pass rate, and the light outside the font or the light guide surface does not require light to pass. At the same time, it is necessary to ensure that the plastic surface has a high metal texture without affecting the propagation of the electromagnetic wave signal, and keep the signal unblocked, but the NCVM is greatly limited in the shading effect, and it is difficult to achieve a complete shading effect.

In view of this, the present invention provides a coated member having a good light-shielding effect and a good appearance.

In addition, it is also necessary to provide a method of fabricating the coated member.

A coated member comprising a transparent substrate on which a primer layer, a metal layer and a topcoat layer are sequentially formed, the primer layer being acrylic acid, and the acrylic acid is added in a mass percentage of 35% to 40% % of titanium dioxide white paste or a black paste of 2% to 4% by weight of carbon black or iron oxide, the metal layer being formed by vacuum evaporation, the topcoat layer being acrylic acid.

A method of making a coated member.

Providing a transparent substrate;

Forming a primer layer on a surface of the transparent substrate;

The primer layer is acrylic acid, and a white color paste of 35% to 40% by mass or a black color paste of 2% to 4% of carbon black or iron oxide is added to the acrylic acid;

Forming a metal layer by vacuum evaporation;

A topcoat layer is sprayed onto the metal layer, the topcoat layer being acrylic.

Compared with the prior art, the coated member of the present invention can retain the basic steps and parameters of the original NCVM process, and maintain a certain proportion of the color paste in the primer layer to maintain the smoothness of the electromagnetic wave signal, and the shading effect is good, and A coated part with a good appearance.

Referring to FIG. 1, the coated member 10 of the present invention comprises a transparent substrate 11 on which a primer layer 13 is formed, on which a metal layer 15 is formed, which is vacuum evaporated. A plating method is formed, and finally, a topcoat layer 17 is formed on the metal layer 15.

The transparent substrate 11 is made of a transparent material, such as a transparent plastic material. The plastic material selected in the preferred embodiment is a transparent polycarbonate (Polycarbonate, PC) or a polymethyl methacrylate (Polymethyl Methacrylate, PMMA).

The primer layer 13 is mainly composed of acrylic acid, and the primer layer 13 has a thickness of about 10 to 20 μm. A white color paste is added to the primer layer 13 in a mass percentage of 35% to 40%. The main component of the white color paste is a titanium dioxide pigment, which acts in conjunction with the coating layer to shield the light passing through the non-light-conducting region. The primer layer 13 is added with a black color paste, and the mass percentage thereof is 2% to 4%. The main component of the black color paste is iron oxide or carbon black pigment, and the function is also matched with the coating layer to shield the non-light-conducting region. Light passes through.

The metal layer 15 is formed by vacuum evaporation, and the film layer has a thickness of 200-500 nm, which satisfies both the metallic texture and the high-gloss appearance, and satisfies the RF detection without interfering with the electromagnetic wave signal.

Finally, the topcoat layer 17 is sprayed. The topcoat layer 17 is mainly composed of acrylic acid and has a thickness of about 10-15 μm. It is leveled, baked at 60 ^o C for 5 min, and then cured by ultraviolet light.

A manufacturing method of a coated member 10 according to a preferred embodiment of the present invention includes the following steps:

A substrate 11 is provided. The substrate 11 is made of a transparent or translucent material, such as a transparent plastic material. The plastic material selected in the preferred embodiment is a transparent polycarbonate (Polycarbonate, PC) or a polymethyl methacrylate (Polymethyl Methacrylate). , PMMA).

Pretreatment: The substrate 11 was placed in absolute ethanol for ultrasonic cleaning to remove oil stains on the surface of the substrate 11, and the cleaning time was 5 to 10 minutes.

Referring to FIG. 1, the coating member 10 includes a transparent substrate 11 and a primer layer 13 on the transparent substrate 11. The primer layer 13 is mainly composed of acrylic acid and has a thickness of about 10-20 μm and is in a primer. The white color of 5% to 40% of titanium dioxide added to the layer or the black color paste of carbon black or iron oxide is 2% to 4%, which is leveled, baked at 70 ^o C for 10 minutes, and then subjected to ultraviolet curing step.

The metal layer 15 is formed by vacuum evaporation coating, and the step parameters are: coating vacuum degree 3×10 ^-8 Pa, using 99.9% aluminum wire with a diameter of 1.0 mm, a plating length of 8-10 cm, and selecting a two-electrode vacuum evaporation coating. The ratio of revolution and rotation is 7:6, the revolution is 15PRM, the coating voltage is 7-9V, the coating current is 4000-5000A, and the evaporation time is 7 minutes. The metal layer 15 has a thickness of 200-500 nm, and the coated member 10 subjected to the above vapor deposition process satisfies both the metallic high-gloss appearance and the RF detection, and does not interfere with the electromagnetic wave signal.

The topcoat layer 17 is sprayed. The topcoat layer 17 is mainly composed of acrylic acid and has a thickness of about 10-15 μm. It is leveled, baked at 60 ^o C for 5 min, and then subjected to an ultraviolet curing step.

The coating member 10 of the invention can realize the coating member with good light shielding effect and good appearance while maintaining the smooth electromagnetic wave signal under the premise of retaining the basic steps and parameters of the original NCVM process.

Experimental test

1. Adhesion test. The 3M tape is quickly pulled up in the direction of 45 degrees for 3 minutes without peeling off.

2. There is no obvious color difference in the visual sample.

3. Glossiness is required to reach 100G 20 above 20 ^o C, and no projection is observed under the illumination of 1W LED white light source.

10. . . Coated parts

11. . . Transparent substrate

13. . . Primer layer

15. . . Metal layer

17. . . Top coat

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic enlarged cross-sectional view showing a coated member of a preferred embodiment of the present invention.

10. . . Coated parts

11. . . Transparent substrate

13. . . Primer layer

15. . . Metal layer

17. . . Top coat

Claims (9)

A coated member comprising a transparent substrate on which a primer layer, a metal layer and a topcoat layer are sequentially formed, the improvement being that the primer layer is an acrylic paint layer, and the acrylic acid is added A white color paste of 25% to 40% by mass of titanium dioxide or a black color paste of 2% to 4% by mass of carbon black or iron oxide, the top coat layer being an acrylic paint layer. The coated article of claim 1, wherein the transparent substrate is made of transparent polycarbonate or polymethyl methacrylate. The coated article of claim 1, wherein the primer layer has a thickness of 10-20 μm. The coated article according to claim 1, wherein the metal layer is an aluminum, chromium or silver layer having a thickness of 0.5 to 0.8 μm. The coated article of claim 1, wherein the topcoat layer has a thickness of 10-15 μm. A method of manufacturing a coated member, comprising the steps of:
Providing a transparent substrate;
Forming a primer layer on a surface of the transparent substrate;
The primer layer is acrylic acid, and a white color paste of 35% to 40% by mass of titanium dioxide or a black color paste of 2% to 4% of carbon black or iron oxide is added to the acrylic acid;
Forming a metal layer by vacuum evaporation;
A topcoat layer is sprayed onto the metal layer, the topcoat layer being acrylic. The method for manufacturing a coated member according to claim 6, wherein the primer layer spraying step parameter is: baking at 70 ^o C for 10 min, and then curing by ultraviolet light. The method for fabricating a coated member according to claim 6, wherein the step of vapor-depositing the metal layer is: a vacuum of 3×10 ^-8 Pa, and a diameter of 1.0 mm by using 99.9% of the aluminum wire. The material length is 8-10cm, and the double-electrode vacuum evaporation coating is selected. The ratio of revolution and rotation is 7:6, the revolution is 15PRM, the coating voltage is 7-9V, the coating current is 4000-5000A, and the evaporation time is 7 minutes. The method of fabricating a coated article according to claim 8, wherein the metal layer has a thickness of 200-500 nm.